Cheap flights from Ottawa to London Heathrow Airport from C$ 449
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
25 Nov — 2 Dec1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in September or January, booked 54 days in advance, depart on a Friday or Wednesday and return on a Monday
Cheap flight deals from Ottawa to Heathrow
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 October 2026.
Fri 13/112:00 p.m. -
1 stop16h 20m
Sun 15/1111:05 a.m. -
2 stops32h 02m
Deal found 23/10C$ 925
Tue 3/114:46 p.m. -
1 stop34h 09m
Sat 7/116:35 a.m. -
2 stops17h 52m
Deal found 22/10C$ 1,050
Sat 7/116:00 a.m. -
1 stop22h 10m
Wed 11/116:50 a.m. -
2 stops20h 06m
Deal found 22/10C$ 1,054
Thu 26/116:00 a.m. -
1 stop23h 25m
Sat 30/16:50 a.m. -
2 stops17h 37m
Deal found 22/10C$ 1,057
Mon 23/116:30 a.m. -
2 stops19h 40m
Mon 30/116:00 a.m. -
2 stops14h 57m
Deal found 23/10C$ 1,067
Mon 23/112:00 p.m. -
1 stop11h 40m
Fri 27/1112:05 p.m. -
2 stops14h 51m
Deal found 22/10C$ 1,069
Thu 5/119:40 p.m. -
Nonstop6h 40m
Thu 12/119:00 a.m. -
1 stop11h 08m
Deal found 26/10C$ 1,075
Best flights from Ottawa to Heathrow
Discover carefully curated flight deals from Ottawa to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.
Sun 6/126:00 a.m. -
1 stop19h 20m
Sun 13/124:20 p.m. -
1 stop32h 07m
Deal found 22/10C$ 1,069
Thu 5/115:10 p.m. -
1 stop18h 25m
Thu 12/1110:00 a.m. -
2 stops18h 40m
Deal found 26/10C$ 1,266
Sun 17/13:10 p.m. -
1 stop14h 15m
Sun 7/210:25 a.m. -
1 stop15h 58m
Deal found 22/10C$ 1,085
Tue 19/14:36 p.m. -
1 stop14h 24m
Tue 9/212:50 p.m. -
1 stop14h 06m
Deal found 22/10C$ 1,085
Mon 5/45:10 p.m. -
2 stops12h 35m
Sat 1/56:15 a.m. -
1 stop13h 45m
Deal found 26/10C$ 1,306
Sun 17/110:30 a.m. -
2 stops14h 50m
Fri 22/18:00 a.m. -
2 stops18h 23m
Deal found 22/10C$ 1,085
Sun 8/1110:30 a.m. -
2 stops17h 40m
Fri 13/116:00 p.m. -
2 stops25h 29m
Deal found 23/10C$ 1,180
Sat 7/116:00 a.m. -
2 stops19h 40m
Fri 13/116:00 p.m. -
2 stops25h 29m
Deal found 23/10C$ 1,180
Thu 5/116:15 a.m. -
1 stop20h 40m
Thu 19/113:10 p.m. -
2 stops28h 19m
Deal found 23/10C$ 1,238
Mon 12/410:30 a.m. -
2 stops15h 45m
Wed 28/47:45 a.m. -
1 stop13h 30m
Deal found 24/10C$ 1,284
Mon 12/412:30 p.m. -
2 stops17h 10m
Tue 27/43:20 p.m. -
1 stop11h 36m
Deal found 24/10C$ 1,284
Wed 14/42:46 p.m. -
1 stop11h 09m
Tue 27/410:25 a.m. -
2 stops18h 17m
Deal found 24/10C$ 1,284
Direct flights from Ottawa to Heathrow
Explore direct flight options from Ottawa to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 October 2026.
Wed 7/49:00 p.m. -
Nonstop6h 35m
Wed 21/412:05 p.m. -
Nonstop7h 55m
Deal found 23/10C$ 1,057
Wed 7/49:00 p.m. -
Nonstop6h 35m
Wed 21/412:05 p.m. -
Nonstop7h 55m
Deal found 23/10C$ 1,058
Wed 21/49:00 p.m. -
Nonstop6h 35m
Mon 26/49:30 a.m. -
Nonstop7h 55m
Deal found 22/10C$ 1,064
Mon 9/116:50 p.m. -
Nonstop6h 40m
Thu 12/111:25 p.m. -
Nonstop7h 55m
Deal found 25/10C$ 1,071
Mon 5/46:55 p.m. -
Nonstop6h 35m
Sat 1/52:10 p.m. -
Nonstop7h 55m
Deal found 23/10C$ 1,072
Wed 14/49:00 p.m. -
Nonstop6h 35m
Thu 29/49:30 a.m. -
Nonstop7h 55m
Deal found 24/10C$ 1,074
Mon 23/116:50 p.m. -
Nonstop6h 40m
Mon 30/1111:10 a.m. -
Nonstop7h 55m
Deal found 23/10C$ 1,076
Thu 5/119:40 p.m. -
Nonstop6h 40m
Thu 12/111:25 p.m. -
Nonstop7h 55m
Deal found 26/10C$ 1,078
Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 26 October 2026 and is based on user searches.
Tue 3/114:46 p.m. -
1 stop34h 09m
Sat 7/116:35 a.m. -
2 stops17h 52m
Deal found 22/10C$ 1,050
Thu 5/119:40 p.m. -
Nonstop6h 40m
Thu 12/119:00 a.m. -
1 stop11h 08m
Deal found 26/10C$ 1,075
Sat 7/116:00 a.m. -
1 stop22h 10m
Wed 11/116:50 a.m. -
2 stops20h 06m
Deal found 22/10C$ 1,054
Fri 13/112:00 p.m. -
1 stop16h 20m
Sun 15/1111:05 a.m. -
2 stops32h 02m
Deal found 23/10C$ 925
Mon 23/116:30 a.m. -
2 stops19h 40m
Mon 30/116:00 a.m. -
2 stops14h 57m
Deal found 23/10C$ 1,067
Mon 23/112:00 p.m. -
1 stop11h 40m
Fri 27/1112:05 p.m. -
2 stops14h 51m
Deal found 22/10C$ 1,069
Thu 26/116:00 a.m. -
1 stop23h 25m
Sat 30/16:50 a.m. -
2 stops17h 37m
Deal found 22/10C$ 1,057
One-way flights from Ottawa to Heathrow
Search for one-way flight options from Ottawa to Heathrow. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.
Mon 7/124:15 p.m. -
1 stop15h 35m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 26/10C$ 449
Tue 8/126:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 25/10C$ 450
Mon 23/116:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 23/10C$ 460
Thu 21/16:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 25/10C$ 467
Fri 27/116:10 a.m. -
1 stop25h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 23/10C$ 475
Tue 8/127:00 a.m. -
2 stops24h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 24/10C$ 479
Wed 27/16:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 481
Tue 26/16:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 482
Sun 24/16:55 p.m. -
1 stop36h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 25/10C$ 484
Mon 25/15:30 a.m. -
3 stops26h 20m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 25/10C$ 486
Find flight deals from Ottawa to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 26 October 2026.
Customize your flight search to find flights from Ottawa to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 26 October 2026.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 7/12
4:15 p.m.-12:50 p.m.
1 stop15h 35m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 449
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Tue 8/12
6:10 a.m.-12:50 p.m.
1 stop25h 40m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 450
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 23/11
6:10 a.m.-12:50 p.m.
1 stop25h 40m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 460
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 26/3
12:10 p.m.-8:05 a.m.
2 stops15h 55m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 582
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sun 10/1
10:35 a.m.-9:35 p.m.
2 stops30h 00m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 597
Quickest round-trip
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Tue 23/3
2:00 p.m.-9:05 a.m.
2 stops15h 05m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 605
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 26/3
5:15 p.m.-12:50 p.m.
1 stop15h 35m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 621
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 11/1
3:25 p.m.-5:30 p.m.
3 stops21h 05m
London Heathrow
Wed 31/12
12:00 a.m.-6:00 p.m.
Nonstop0h 00m
C$ 624
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sun 6/12
6:00 a.m.-6:20 a.m.
1 stop19h 20m
London Heathrow
Sun 13/12
4:20 p.m.-7:27 p.m.
1 stop32h 07m
C$ 1,069
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sun 17/1
3:10 p.m.-10:25 a.m.
1 stop14h 15m
London Heathrow
Sun 7/2
10:25 a.m.-9:23 p.m.
1 stop15h 58m
C$ 1,085
Flights are sorted by cheapest round-trip flights first.
Deals found on 26/10
Showing 1-10 of 20 resultsSorted by cheapest first
1
2
Best time to book a flight from Ottawa to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.
YOW-LHR
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ottawa to London Heathrow Airport
Prices
Delays
More
How far ahead should I book a flight from Ottawa to London Heathrow Airport?
The best time to book flights from Ottawa to London Heathrow Airport is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 984). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of C$ 1,501). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from YOW to LHR?
Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 October 2026.
When flying from Ottawa to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?
Airfare is below average for this route at the moment.
Ottawa to London Heathrow Airport flights typically cost between C$ 939 and C$ 1,220 in November.The cheapest round-trip price found within the last 5 days was C$ 925 on Air Canada (13 Nov-15 Nov).
How often are flights from Ottawa to London delayed?
About 32% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 141 minutes.
What is the most punctual flight time for Ottawa to London flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Ottawa to London flights?
Over the past year, Air Canada has had the lowest number of delays on this route, with just 32% of flights being delayed.
What’s the top layover airport for flights from Ottawa to London Heathrow Airport?
Share of one-stop round-trip flights from Ottawa to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Montreal (YUL) – chosen by Cheapflights users on 70% of one-stop itineraries from Ottawa to London Heathrow Airport on Cheapflights.
What’s the cheapest layover airport for flights from Ottawa to London Heathrow Airport?
Average round-trip fare for 1-stop flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 844.
What’s the fastest layover option from Ottawa to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Ottawa to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 09m.
Which airport typically offers the quickest layover for flights from Ottawa to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Paris (CDG) offer the fastest connection on this route, with an average layover time of 1h 45m.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 26 October 2026.
Read reviews from past customers who have flown Air France,Virgin Atlantic, andAir Canada
from Ottawa to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
Related info for your journey
Find useful and relevant information for your journey from Ottawa to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Ottawa to London Heathrow?
Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 0 outbound flights to London Heathrow per day from 4 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.
How long is the flight from Ottawa to London Heathrow Airport?
A quick flight from Ottawa to London Heathrow Airport can take about 19h 20m. United Airlines provides one of the quickest options available for as low as C$ 1,069. The distance between Ottawa and London Heathrow Airport is about 5343 km.
What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?
Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 485. Other airlines that can offer you cheap pricing are Air France, from C$ 780, and Air Canada, from C$ 909. Virgin Atlantic is 57% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most reliable airlines from Ottawa to London Heathrow Airport?
The top 3 most reliable airlines when flying from Ottawa to London Heathrow Airport are United Airlines (59%), Air Canada (59%) and Aegean Airlines (59%).
What are the cheapest flights from Ottawa to London Heathrow Airport?
On average you can expect to pay C$ 1,555 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 763 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 1,054.
Can I find deals for business class flights from Ottawa to Heathrow?
Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 984). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of C$ 1,501). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Travelling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Kingston upon Thames
Slough
Marlow
Cobham
Hounslow
Wembley
Leamington Spa
Northampton
Watford
High Wycombe
Stratford-upon-Avon
Moreton-in-Marsh
Browse thousands of different options on Cheapflights for your next trip
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Fly from Ottawa to Heathrow on these airlines
Choose from the following airlines for your flight from Ottawa to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 26 October 2026.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 October 2026.
Discover the top 4 airlines that operate flights from Ottawa to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 26 October 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ottawa to Heathrow?
When you search for this flight from Ottawa to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ottawa to Heathrow?
Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Ottawa to Heathrow with no change fees?
Yes, we can. To see specific flights from Ottawa to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Ottawa to Heathrow become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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